公开(公告)号：WO2015047123A1

公开(公告)日：2015-04-02

申请号：PCT/RU2013/000836

申请日：2013-09-25

Applicant: SIEMENS AKTIENGESELLSCHAFT

Inventor： DORRER, Johann ,  PARFENOV, Stanislav Sergeyevich ,  VINOGRADOV, Sergey Valerievich ,  NIKOLAEV, Maxim Alexandrovich

IPC: H02H3/04 ,  G01R31/327 ,  G05B23/02 ,  H01H47/00 ,  H02H3/05 ,  H02H1/00

CPC classification number: H02H3/05 ,  G01R31/3274 ,  G05B23/0262 ,  H01H71/123 ,  H01H2009/0083 ,  H02H1/0061 ,  H02H3/044

Abstract: The invention relates to a fault detection method and system in an Electronic Trip Unit (ETU). An ETU includes a Protection Function (PF) and a Metering Function (MF), each of the PF and MF measuring in parallel the same one or more power line parameters. A comparator compares the first measurement and the second measurement and outputs a fault signal when a disagreement is detected with a given level of accuracy between the first measurement and the second measurement. At least one further comparator may be used that compares the first measurement and the second measurement, and a voter circuit that collects signals resulting from each said comparing and detects a fault when at least one fault signal exists among said collected signals.

Abstract translation: 本发明涉及电子跳闸单元（ETU）中的故障检测方法和系统。 ETU包括保护功能（PF）和计量功能（MF），每个PF和MF并联测量相同的一个或多个电源线参数。 比较器比较第一测量和第二测量，并且当在第一测量和第二测量之间以给定的准确度检测到不一致时，输出故障信号。 可以使用比较第一测量和第二测量的至少一个另外的比较器，以及选择电路，其收集由每个所述比较产生的信号，并且在所述收集的信号中存在至少一个故障信号时检测故障。